From 40bb123d396c6ca842b3ed6a3b827663d85099a0 Mon Sep 17 00:00:00 2001
From: Manfred Touron <m@42.am>
Date: Thu, 4 Oct 2018 17:32:48 +0200
Subject: [PATCH] feat: limit dependency depth to 100 to avoid cyclic
 dependencies

---
 issue.go | 15 ++++++++++++++-
 1 file changed, 14 insertions(+), 1 deletion(-)

diff --git a/issue.go b/issue.go
index cb63e597b..9fb04342f 100644
--- a/issue.go
+++ b/issue.go
@@ -284,8 +284,21 @@ func (i Issue) GetRelativeIssueURL(target string) string {
 }
 
 func (i Issue) BlocksAnEpic() bool {
+	return i.blocksAnEpic(0)
+}
+
+func (i Issue) String() string {
+	out, _ := json.Marshal(i)
+	return string(out)
+}
+
+func (i Issue) blocksAnEpic(depth int) bool {
+	if depth > 100 {
+		log.Printf("very high blocking depth (>100), do not continue. (issue=%s)", i)
+		return false
+	}
 	for _, dep := range i.Blocks {
-		if dep.IsEpic() || dep.BlocksAnEpic() {
+		if dep.IsEpic() || dep.blocksAnEpic(depth+1) {
 			return true
 		}
 	}